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參數(shù)資料
| 型號： | KS8701 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | FLEXTM Roaming Decoder II |
| 中文描述： | FLEXTM漫游解碼器二 |
| 文件頁數(shù)： | 52/73頁 |
| 文件大小： | 434K |
| 代理商： | KS8701 |
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KS8701
Decoder-to-Host Packet Descriptions
FLEX
TM
Roaming Decoder II
51
STATUS PACKET
The Status Packet contains various types of information that the host may require. The Status Packet will be
sent to the host whenever the KS8701 is polled and has no other data to send. The KS8701 can also prompt the
host to read the Status Packet due to events for which the KS8701 was configured to send it (see
“
Configuration
Packet
”
on page 18 and
“
Control Packet
”
on page 21 for a detailed description of the bits). The KS8701 will
prompt the host to read a Status Packet if the...
1. ...
SMU
bit in the Status Packet and the
SME
bit in the Configuration Packet are set.
2. ...
MT
bit in the Status Packet and the
MTE
bit in the Configuration Packet are set.
3. ...
EOF
bit in the Status Packet is set.
4. ...
LBU
bit in the Status Packet is set.
5. ...
EA
bit in the Status Packet is set.
6. ...
BOE
bit in the Status Packet is set.
The ID of the Status Packet is 127 (decimal).
Table 28: Status Packet Bit Assignments
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte 3
0
1
1
1
1
1
1
1
Byte 2
FIV
f
6
LB
f
5
x
f
4
x
f
3
c
3
x
f
2
c
2
f
1
c
1
EA
f
0
Byte 1
SM
C
0
Byte 0
SMU
LBU
x
MT
EOF
BOE
FIV:
Frame Info Valid. Set when a valid frame info word has been received since becoming synchronous to
the system and the
f
and
c
fields contain valid values. If this bit is clear, no valid frame info words have
been received since the KS8701 became synchronous to the system. This value will change from 0 to
1 at the end of block 0 of the frame in which the 1st frame info word was properly received. It will be
cleared when the KS8701 goes into asynchronous mode. This bit is initialized to 0 when the KS8701 is
reset and when the KS8701 is turned off by clearing the
ON
bit in the Control Packet.
f:
Current frame number. This value is updated every frame regardless of whether the KS8701 needs to
decode the frame. This value will change to its proper value for a frame at the end of block 0 of the
frame. The value of these bits is not guaranteed when
FIV
is 0.
SM:
Synchronous Mode. This bit is set when the KS8701 is synchronous to the system. The KS8701 will
set this bit when the first synchronization words are received. It will clear this bit when the KS8701 has
not received both synchronization words in any frame for 8, 16, or 32 minutes (depending on the
number of assigned frames and the system collapse). This bit is initialized to 0 when the KS8701 is
reset and when it is turned off by clearing the
ON
bit in the Control Packet
LB:
Low Battery. Set to the value last read from the
LOBAT
pin. The host controls when the
LOBAT
pin is
read via the Receiver Control Packets. This bit is initialized to 0 at reset. It is also initialized to the
inverse of the
LBP
bit in the Configuration Packet when the KS8701 is turned on by setting the
ON
bit
in the Control Packet.
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